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    <script>
        // 将多维数组
        var arr = [
            [1, 2, 2],
            [3, 4, 5, 5],
            [6, 7, 8, 9, [11, 12, [12, 13, [14]]]], 10
        ];
        // 转为一维数组 [1, 2, 2, 3, 4, 5, 5, 6, 7, 8, 9, 11, 12, 12, 13, 14, 10]
        // 提示：需要使用 instanceof判断是否为数组 并且使用递归
        // console.log(arr instanceof Array);
        // console.log(typeof arr)
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